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USGS Daily Statistics for Montana

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Questions or concerns about USGS data and data products in Montana and Wyoming can be directed to the Wyoming-Montana Water Science Center Data Management Section.


The statistics generated from this site are based on approved daily-mean data and may not match those published by the USGS in official publications. The user is responsible for assessment and use of statistics from this site. For more details on why the statistics may not match, click here.

USGS 12301250 Tobacco River at Eureka, MT


Lincoln County, Montana
Hydrologic Unit Code 17010101
Latitude  48°52'40.61", Longitude 115°03'16.06" NAD83
Drainage area 396.2  square miles
Gage datum 2,555.12 feet above NAVD88
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00060, Discharge, cubic feet per second,
Day of
month		 Mean of daily mean values for each day for water year of record in, ft3/s   (Calculation Period 2015-10-01 -> 2024-09-30)

Calculation period restricted by USGS staff due to special conditions at/near site
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
1 90 95 106 246 622 861 375 94 81 83 145 127
2 90 93 108 243 621 800 365 93 77 84 146 143
3 90 90 107 250 625 800 360 90 75 87 145 138
4 90 95 112 264 650 820 351 88 75 84 139 131
5 89 100 114 275 712 805 329 87 74 83 157 126
6 90 99 113 272 792 789 304 85 73 82 164 147
7 95 96 114 277 860 765 291 84 73 81 155 147
8 95 96 114 309 856 733 284 85 75 83 143 142
9 95 93 105 325 792 716 267 82 84 83 131 159
10 92 94 103 331 730 704 254 85 84 87 126 162
11 92 96 111 327 694 705 241 85 81 88 117 145
12 90 91 114 318 693 687 227 83 80 87 116 135
13 92 95 120 313 717 681 219 81 81 86 132 128
14 89 100 125 315 712 738 208 80 80 95 141 123
15 87 97 136 318 700 733 196 77 81 103 170 119
16 87 96 152 319 715 712 186 78 80 106 171 116
17 89 100 162 321 750 683 178 78 79 109 158 110
18 90 99 169 322 727 677 170 78 83 111 148 110
19 92 102 179 331 683 637 162 75 86 108 140 108
20 90 105 197 356 647 589 154 74 85 105 134 107
21 89 100 197 389 675 559 147 74 83 112 132 107
22 88 96 199 415 764 535 142 75 84 112 136 107
23 88 94 205 453 813 522 136 78 86 117 147 106
24 90 94 205 500 871 511 131 82 85 109 163 100
25 91 96 206 520 875 487 124 81 83 104 139 97
26 88 97 207 535 845 450 120 81 85 107 129 97
27 88 99 205 580 812 430 115 81 84 116 124 100
28 87 100 212 611 821 418 111 81 82 125 120 104
29 88 116 224 621 819 406 107 80 82 141 118 97
30 92   240 619 812 384 104 84 83 146 119 92
31 94   248   847   100 87   144   90